Zero Sports Radiator Cap 1.1k / 1.3k For WRX STI VAB

The pressure in the radiator cooling water channel is adjusted appropriately to raise the boiling point of the cooling water. It makes it difficult for the cooling water to boil and prevents the generation of air bubbles at high temperatures, leading to an increase in cooling efficiency. In the main body design, the label surface is etched and spun to emphasize its presence in the engine room. It is the best item for dressing up in the engine room.

* Please refrain from using to lower the pressure. It does not prevent overflow, which is the original purpose.

* ZD8 / ZN8 / ZC6 / ZN6 are not available